Founded in 1980 and headquartered in Taiwan, Sunon (aka Sunonwealth Electric Machine Industry Co., Ltd.), stands out as a prominent global producer of fans, blowers, and thermal management systems. The company has made a name for itself in the fan industry with a comprehensive product line that includes DC brushless fans, micro blowers, CPU coolers, and various other cooling technologies. They are one of the oldest and most renowned fan manufacturers on the world – and not just for PC applications, but for just about anything in need of something smaller than a ceiling fan, spanning from IT to automotive and industrial sectors.

Within the PC space, the company is best known for its proprietary MagLev (Magnetic Levitation) technology, which uses magnetic forces to levitate the rotor shaft, drastically reducing friction and wear. This innovative design improves the durability and performance of their fans, particularly in reducing operational noise and improving high-temperature performance. Sunon introduced the patent and their first MagLev products all the way back in 90s.

The 120mm Sunon MagLev fan that we are reviewing today – MFC0251V2-1Q02U-S99 – is a new, high-performance fan engineered primarily for PC applications, with an emphasis on longevity and functionality. It features Sunon's advanced Vapo-Bearing MagLev Engine, which allegedly ensures a quieter operation and longer lifespan by minimizing friction. This particular fan has a maximum speed of 1900 RPM and all of the bells and whistles of advanced cooling fans, including a wide range PWM speed control (10-100%).

Distinguished by its crisp white color and unique frame design, this fan is aimed PC builders going for a clean and modern aesthetic. The "gaming" designation by the manufacturer clearly divulges their intentions regarding their targeted audience. By default, these fans have both a 4-pin connector and also a Molex connector for their direct connection to the PSU.

 

Fan Testing Methodology

We are testing fans using an Extech HD350 differential manometer, an Extech AN200 velocity meter, and a custom 3D printed apparatus designed for this specific purpose. The apparatus features a simple but effective shutters mechanism that allows us to test the unobstructed (maximum) volume flow of a fan, the fully obstructed (maximum static) pressure of the fan, and multiple points in between, allowing us to compose the actual P-Q performance chart of any fan. The RPM reading is taken with the fan unobstructed (maximum flow), as the fan speed varies depending on the airflow impedance in conjunction with the design of the fan’s blades.

For noise measurements, we are using an Extech HD600 high sensitivity SPL meter. The noise of the fan is measured from 15 centimeters away, not one meter as IEC certifications require, as that would be far too great a distance to measure differences between nearly silent products. Note however that we are measuring the noise level of a fan with its flow unobstructed and the fan, to the best possible degree, uncoupled from the environment. The addition of fan grills, the installation on a cooler, and any other form of obstruction will increase the generated noise, as both aerodynamic and vibration noise will be added into the environment.

Test Results & Conclusion

The Sunon MFC0251V2-1Q02U-S99 is a robust performer across the entirety of the performance chart. At its maximum speed of 1900 RPM, it offers an airflow of 58.9 CFM and a static pressure of 2.48 mmH₂O. However, that performance comes with a noise output of 41.3 dB(A), which is quite noticeable and, in most cases, not really ahead of its competition. When compared to the Corsair ML120, another fan with a magnetic levitation engine, the Sunon model tends to offer significantly better performance by running about 300 RPM faster while generating about the same level of noise.

Overall, Sunon's 120mm MagLev fan stands out as a high-quality part, and better still it's priced competitively at around $11, offering substantial value for those looking for robust cooling solutions within budget constraints. When it's used correctly, the fan easily competes with, and generally outperforms, the best 120 mm products currently available – albeit not immensely so.

However "used correctly" is the operative term, as the MagLev engine makes the fan particular about its orientation. In short, these fans are not meant to be installed with the engine facing upwards, as this can jeopardize the integrity of the Vapo mechanism. As a result, Sunon's MagLev fan is really only good for horizontal uses – front and back air intake/exhaust – and shouldn't be used for vertical configurations at the top and bottom of computer cases.

Despite that, the 120mm MagLev fan does excel when it's in its niche, especially at its price. The biggest hurdle, in that case, is just acquiring a fan, as Sunon is primarily geared up to target the bulk OEM market and doesn't sell their fans in individual retail units. So prospective buyers will need to skip the Neweggs and Amazons of the world, and look instead at electronic and industrial suppliers like Digikey and Mouser.

As modern high-performance CPUs generate more heat, there's been a noticeable increase in the demand for powerful air coolers capable of managing these thermal challenges. Traditional stock air coolers, while sufficient for regular use, are typically designed to be cheap and relatively compact, leaving further improvements to noise control and peak cooling efficiency on the table. This gap has long prompted advanced users and system builders to opt for high-quality aftermarket coolers that designed to better handle the heat output from top-tier processors.

Known for their innovative approach to PC hardware, Arctic Cooling has stepped into this competitive market with a product aimed at delivering effective cooling at a very low retail price. The Freezer 36 A-RGB, a dual fan tower cooler, is designed to support the cooling demands of the latest CPUs while also offering customizable RGB lighting for visual flair. This review will explore the features, performance, and value of the Arctic Cooling Freezer 36 A-RGB, comparing it with other leading products in the market to see how it stacks up in providing efficient and effective cooling for modern CPUs.

Just over 18 months ago, Intel launched their significantly revised ATX v3.0 power supply standard, and with it, the 600 Watt-capable 12VHPWR cable to power video cards and other high-drain add-in cards. The release of the standard came with a lot of fanfare and excitement – the industry was preparing for a future where even flagship video cards could go back to being powered by a single cable – but shortly after, things became exciting again for all the wrong reasons.

The new 12VHPWR connector proved to be less forgiving of poor connections between cables and devices than envisioned. With hundreds of watts flowing through the relatively small pins – and critically, insufficient means to detect a poor connection – a bad connection could result in a thermal runaway scenario, i.e. a melted connector. And while the issue was an edge case overall, affecting a fraction of a fraction of systems, even a fraction is too much when you're starting from millions of PCs, never mind the unhappy customers with broken video cards.

So the PC industry is taking a mulligan on the matter, quickly revising the ATX specification and the 12VHPWR connector to fix their design flaws. In its place we have the new ATX v.3.1 power supply specification, as well as the associated 12V-2×6 connector, the combination of which are intended to serve the same goals, but with far less of a chance of errant electricity causing damage.

Ultimately, the combination of the two new standards has required backwards-compatible changes on both the device (video card) side, as well as the power supply side. And as a result, power supply manufacturers are now in the process of releasing ATX v3.1-compliant PSUs that implement these revisions. For PSU vendors, the changes are relatively trivial overall, but they are none the less important changes that for multiple reasons, they are making sure to promote.

Getting down to business, the first ATX v3.1 power supply to enter our testing labs comes from ADATA sub-brand XPG, a prolific player in the PSU market. XPG recently expanded its product lineup with the introduction of the Core Reactor II VE series, the company's first foray into ATX 3.1-compliant PSUs. As a direct successor of the Core Reactor II series, the Core Reactor II VE is a relatively simple 80Plus Gold unit that distinguishes itself with its straightforward design, aimed at providing steady performance without the high expense.

In today’s review, we are taking a look at the 850W version of the Core Reactor II VE series, which is, for the time being, the most powerful ATX 3.1 unit XPG offers.

While the all-in-one CPU cooler industry is dominated, at least in mindshare, by flagship coolers from the industry’s biggest brands, the market segment overall has grown over the years to cover a much larger gamut of users. From flagship coolers to sub-$100 specials, effective AIO coolers have become available and affordable for most mid-range and higher builds. Thanks in part to some intensive competition in this space, we’ve seen several vendors bring down even 360mm coolers to the sub-$100 market in an effort to get in an edge over their competitors, and a sale in the process.

Looking at an opportunity to grow their own customer base, even the normally premium-focused AlphaCool has opted to get into this action with their Core Ocean lineup of coolers. And today, we're taking a closer look at the Core Ocean T38 360mm, AlphaCool's latest entry-level AIO cooler.

At a high level, the Core Ocean T38 has been designed to balance performance with manufacturing costs, allowing the company to put together an effective cooler that can still be priced low enough to reach budget-conscious consumers. Sticking with an aluminum radiator and keeping the frills such as RGB lighting to a minimum, the T38 is primarily aimed at system builders who require straightforward, effective cooling solutions – and without the complexity of AlphaCool's renowned open-loop custom liquid cooling kits. As we'll see, nothing comes for free, but AlphaCool has been able to put together a rather effective CPU cooler for $100 that's hard to ignore.

While desktop PC power supplies receive the bulk of enthusiasts’ attention for good reasons – not the least of which being the vast selection of options that comes from being a standardized part – power supplies as a whole aren’t just a concern for big PCs. With the majority of PC sales having flipped to notebook sales some years ago, notebook power supplies already lead the market in volume. And while most laptops don’t need the kind of massively powered PSUs that dominate the desktop space, even that is slowly changing as desktop replacement-class laptops increasingly grow in performance and power consumption.

Perhaps the poster-child for the high-performance, high-powered laptop is Eurocom, who has a long history of developing heavy-duty DTR laptops that are all but portable desktop systems. Following recent trends in GPU power consumption and in GPU popularity for both gaming and AI workloads, the company has been selling a range of “mobile supercomputers”, which are practically large, tailor-made laptops that rival even the best of desktop computers – and have the power requirements to match.

In order to power their own high-end laptops, Eurocom has developed a rather unusual 780W AC adapter for high-performance laptops. Intended to power the most powerful of powerful laptops, their latest power adapter can supply over three-quarters of a kilowatt of DC power; a desktop-like wattage for a desktop-like device. It’s a laptop power adapter that’s unique in its scale, and with some room to scale up even further.

Eurocom 780W AC Adapter Power specifications
RAIL	+20V
MAX OUTPUT	39A
	780W
DIMENSIONS	325 x 110 x 40mm, 1.38kg
AC INPUT	90 - 264 VAC, 50 - 60 Hz
MSRP	PSU: $299, Cable: $129+

Eurocom has offered this adapter for a few years now. But it’s taken on a new life as more laptops have been released that use such a large adapter (or two smaller 300W-ish power adapters). And, critically, Eurocom has made additional DC cable/connector sets for other manufactuers’ laptops, significantly increasing the number of systems it’s compatible with. Currently, Eurocom offers DC cables for the following laptops:

• Alienware M17x M18x; 1x DC Cable ; w/ barrel AW connector; 193cm/6.4ft 
• Alienware AREA 51m; 1x DC Cable + Splitter Box w/ 2x barrel AW connectors; 152cm/5ft 
• ASUS ROG G18 Strix; GX501V; GM501; GM501GM; GX531GM; 1x DC Cable; w/ barrel ROG connector 
• ASUS G703GX, GZ700GX; 1x DC Cable w/ 2x ROG barrel connectors; 152cm/5ft 
• CLEVO, OriginPC, Sager, XMG, EUROCOM laptops; 1x DC Cable; w/ 4-pin round connector; 182cm / 6ft 
• CLEVO X370SNx; 1x DC Cable; w/ square connector; 120cm / 3.8ft 
• CLEVO X170SM/X170KM; 1x DC Cable; w/ dual square connectors; 152cm / 5ft 
• Dell Precision 7720/7710; 1x DC Cable; w/ barrel Dell connector; 120cm / 3.8ft 
• MSI GE76, GT76, GT77, GE78HX Raider, Titan 18HX 1x DC Cable; w/ single square connector; 120cm / 3.8ft 
• MSI laptops & MSI Trident AS Gaming Desktops; 1x DC Cable; w/ 4-pin round connector; 182cm / 6ft 

The Eurocom 780W AC Adapter

Externally, the Eurocom 780W AC adapter looks like a hybrid between a PC PSU and a laptop adapter. It is shaped like an oversized laptop AC adapter but has a metallic body and cooling vents/fans. Eurocom advertises that it weighs “only 1.34kg”, which is the weight of an entire 14-inch laptop by comparison, but is relatively lightweight for a PSU with that kind of power output. The company logo is debossed across the top side of the adapter, with four round anti-slip pads found at its bottom. Care needs to be taken while moving it around because the metallic edges and weight can spell trouble for wooden surfaces.

Eurocom installed a small information display on the AC adapter, which shows the current, voltage, and power output, as well as the temperature of the adapter. It is not perfectly accurate – we can see it was reading a 12W load without a DC cable attached to the adapter – but it works as a basic reference. Next to it, there is a heavy-duty metallic connector for the DC cable. On the other side we can find a typical three-prong C14 AC cable receptacle, as well as an on/off switch, which is not something commonly found on laptop AC adapters.

 

Opening up the chassis, we can see that the Eurocom 780W AC adapter is not unlike common PC PSUs – just less complex due to the need to only generate a single 20V rail. The basic layout is identical, with an AC filter at the input consisting of four Y capacitors, two X capacitors, and two substantial filtering inductors, that leads to a rectifying bridge. The GBJ1508 bridge is made by HY Electronic Cayman Ltd, a Taiwanese company we're encountering for the first time.

 

Then we have an APFC circuitry with a massive Aishi 450V/560μF capacitor and a large filtering coil being its passive components, with a Toshiba K31N60W regulator on the same heatsink as the two MOSFETs that form a typical half-bridge configuration. Following that we have a small transformer and two Infineon 045N10N MOSFETs to generate the 20V power output. Cooling is provided by two Protechnic Electric MGT3812XB-W20 38 mm fans, which are small but high quality products with a double-ball bearing engine.

Test Results (~25°C Ambient)

For the testing of PSUs, we are using high precision electronic loads with a maximum power draw of 2700 Watts, a Rigol DS5042M 40 MHz oscilloscope, an Extech 380803 power analyzer, two high precision UNI-T UT-325 digital thermometers, an Extech HD600 SPL meter, and various other bits and parts. 

The average efficiency of the Eurocom 780W AC adapter is very high, at 91.6% when the PSU is powered from an 230V AC source and drops down to 90.9% when powered from an 115V AC source. There is no 80Plus or similar efficiency certification covering this PSU, but there is legislation such as the Ecodesign 2019/1782 directive, and, even though the manufacturer does not fully publish its performance specs as the directive requires, the Eurocom 780W adapter seems to easily meet them. We must mention that this kind of PSU has an advantage over classic PC PSUs because it only generates a single voltage line, and conversion losses are lower, so it should not be directly compared to any multi-voltage output PSU.

The two small fans of the Eurocom 780W AC adapter seem hardwired to the power output of the unit, largely ignoring the temperature of the adapter and adjusting their speed only according to the load. Up to 40% load, which should cover the power needs of most gaming laptops anyway, the adapter is practically entirely silent. The speed of the fan gradually increases when the load is greater than 330 Watts, reaching terrifying noise figures at maximum load. Given the nature of the adapter, it is highly unlikely that it will operate at such high a load for prolonged periods of time, as even the laptops that require 2x330 Watt adapters will not continuously sustain such a high load.

Power Supply Quality 

The electrical performance of the Eurocom 780W AC adapter is surprisingly good compared to its datasheet specifications. Eurocom claims a maximum voltage ripple of 200 mV but we recorded a maximum of 116 mV, which is alright for a 20 V rail and better than we expected due to the mediocre secondary side filtering. Voltage regulation is very good, at just 1.2% across the nominal load range.

Main Output
Load (Watts)	158.03		394.68		586.46		780.78
Load (Percent)	20% Load		50% Load		75% Load		100% Load
	Amperes	Volts	Amperes	Volts	Amperes	Volts	Amperes	Volts
20 V	7.8	20.26	19.5	20.24	29.25	20.05	39	20.02

 

Line	Regulation (20% to 100% load)	Voltage Ripple (mV)
		20% Load	50% Load	75% Load	100% Load
20V	1.2%	44	66	82	116

During our routine evaluation, we examine the fundamental protection features of all power supply units we review, including Over Current Protection (OCP), Over Voltage Protection (OVP), Over Power Protection (OPP), and Short Circuit Protection (SCP). The Eurocom 780W AC adapter behaves quite oddly here, as it has a rated output of 39 A and a maximum output of 45 A for 25 ms. However, we were able to draw 50 A from the unit, which is nearly 1000 Watts, for several minutes without triggering the OCP/OPP protection. The PSU did not show any serious signs of stress or overheating over that time, nor poor electrical performance. The OPP protection triggers immediately once the load is greater than 50.3 A – and also immediately resets and restarts the PSU when the load drops below 50.2A. It would seem that this platform was initially designed to be significantly more powerful and the OEM “forgot” to adjust the OCP/OPP trigger points.

Conclusion

The Eurocom 780W AC adapter melds raw power with innovation, presenting a piece that's as formidable as it is intriguing. With its substantial weight and metallic edges, it demands respect and caution, especially on delicate surfaces. However, its weight is justified by the impressive power output it delivers, making it a powerhouse that somewhat overshadows its bulky, heavy-set design. The inclusion of a display for monitoring performance is a smart touch, though its accuracy leaves room for improvement.

On the inside, Eurocom doesn't skimp on quality. The adapter's internals are a testament to careful selection and engineering, closely mirroring the complexity and efficiency of high-end PC PSUs. Its cooling system, though compact, functions well and provides good performance without compromising on noise levels — at least under most loads. That said, the adapter's noise profile at maximum load might not be everyone's cup of tea, hinting at a balance yet to be perfected between power and tranquility.

Overall, Eurocom's 780W AC adapter boasts commendable efficiency and electrical performance. But as a premium-priced product – a complete unit and cable will set you back at least $429 – it could benefit from a touch more finesse, particularly in terms of user safety and operational noise at high loads. Otherwise, I'm personally a bit surprised that Eurocom isn't offering a open-ended cable for DIY enthusiasts, which could broaden its appeal and utility. Such an addition would not only cater to a wider audience but also underscore Eurocom's commitment to versatility and innovation.

In sum, while the adapter stands out for its power and performance, there's also a clear avenue for Eurocom to enhance its appeal through minor, yet impactful, improvements.

Iceberg Thermal Inc. is one of the newer players in the PC cooling market. The company was founded in 2019 by an experienced team of designers and engineers setting off on their own, aiming to deliver a wide range of PC cooling products to industrial and commercial users alike. They only have a handful of retails products currently available, with the vast majority of them being CPU air coolers, but they have just launched their first liquid cooler products, the IceFLOE Oasis series.

In today’s review, we are having a look at the IceFLOE Oasis 360mm AIO (All-In-One) CPU cooler, the larger of the company's two recently-released liquid coolers. The IceFLOE Oasis CPU cooler targets the high-performance PC cooling market with a sub-$100 price point, aiming to deliver the performance needed to effectively cool a power-hungry processor without being a drain on the wallet in the process. This cooler features a 360mm radiator for an ample heat dissipation area, as well as housing for three high-airflow 120 mm fans. The IceFLOE Oasis supports a wide range of Intel and AMD socket types, making it compatible with a broad spectrum of CPUs. Additionally, it offers advanced RGB lighting, allowing users to customize the aesthetic of their cooling system.

In the arena of PC components, Be quiet! is a name synonymous with excellence, known for its fusion of silent functionality and exceptional performance. The company's broad range of products, from high-end power supply units (PSUs) to sophisticated cases and cooling solutions, including both air and liquid options, is crafted with a keen eye on reducing noise while maximizing efficiency. Be quiet! has earned accolades for its dedication to achieving near-silent operation across its lineup, making it a preferred choice among those in the PC enthusiast community who seek a serene computing environment. The diversity of its offerings reflects a deep understanding of the needs of tech enthusiasts and professionals alike, with each product designed to offer a blend of low noise levels and high efficiency.

Today we're looking at he Be quiet! Straight Power 12 750W PSU, a high-tier offering in Be quiet!'s PSU portfolio that exemplifies the brand's approach to product design. The Straight Power 12 series is engineered to deliver top performance and whisper-quiet operation, appealing to users who seek the optimal mix of power efficiency and sound level, without compromising on reliability and premium quality. The 750 Watt model that we are reviewing today is the weakest unit of the series, yet still enough to effortlessly power a modern gaming system with a mid-tier GPU.

Typical CPU coolers do the job for standard heat management but often fall short when it comes to quiet operation and peak cooling effectiveness. This gap pushes enthusiasts and PC builders towards specialized aftermarket solutions designed for their unique demands. The premium aftermarket cooling niche is fiercely competitive, with brands vying to offer top-notch thermal management solutions.

Today we're shining a light on DeepCool's AK620 Digital cooler, a notable entry in the high-end CPU cooler arena. At first blush, the AK620 Digital stands out from the crowd mostly for its integrated LCD screen. Yet aesthetics aside, underneath the snappy screen is a tower cooler that was first and foremost engineered to exceed the cooling needs of the most powerful mainstream CPUs. And it's a big cooler at that: with a weight of 1.5Kg and 162mm tall, this is no lightweight heatsink and fan assembly. All of which helps to set it apart in a competitive marketplace.

DeepCool is one of the few veterans in the PC power & cooling components field still active today. The Chinese company was first founded in 1996 and initially produced only coolers and cooling accessories, but quickly diversified into the PC Case and power supply unit (PSU) markets. To this day, DeepCool stays almost entirely focused on PC power & cooling products, with input devices and mousepads being their latest diversification attempt.

Today's review turns the spotlight toward DeepCool’s PSUs and, more specifically, the PX850G 850W ATX 3.0 PSU, which currently is their most popular power supply. The PX850G is engineered to balance all-around performance with reliability and cost, all while providing ATX 3.0 compliance. It is based on a highly popular high-output platform but, strangely, DeepCool rated the PX850G for operation up to 40°C.

ARCTIC GmbH, originally known as Arctic Cooling, first burst onto the PC cooling scene in 2001 and has since maintained its stature as a leader in cooling technologies. The company made its mark with top-notch thermal compounds and has since kept its focus on cooling solutions while also expanding into other tech accessories, including advanced monitor mounts and audio products.

With the introduction of the Liquid Freezer III series, ARCTIC has taken another significant step forward in the cooling market. This new lineup builds upon the success of the previous Liquid Freezer II series, the great price-to-performance ratio of which made it a highly popular product. Today, we're delving into ARCTIC's latest offerings with the Liquid Freezer III series and, specifically, the 280 A-RGB White model. We'll assess the features, quality, and thermal performance of the AIO (All-In-One) cooler of the series ARCTIC is hoping to dominate the bulk of the mainstream market with.

Be quiet! is renowned for its dedication to excellence in the realm of PC components, specializing in products that emphasize silence and performance. The brand's product lineup is extensive, encompassing high-quality power supply units (PSUs), cases, and cooling solutions, including air and liquid coolers. Be quiet! is particularly renowned for trying to achieve whisper-quiet operation across all its products, making it a favorite among PC enthusiasts who prioritize a noiseless computing environment. The brand's portfolio reflects a dedication to meeting the diverse needs of tech aficionados and professionals, with an array of products that emphasize noise reduction and efficiency.

This review shines a spotlight on the Be quiet! Pure Power 12 M 650W PSU, a standout product in Be quiet!'s PSU collection that illustrates the company's attitude towards product design. The Pure Power 12 M series is designed to provide dependable performance and quiet operation, catering to users who demand a good balance of power efficiency and acoustics with reliability and value. This model, in particular, strives to offer a compelling blend of performance and quality, making it an attractive option for individuals seeking a PSU that aligns with the requirements of both entry-level and advanced PC builds.

Cooler Master, renowned for its pioneering role in cooling technologies, has evolved into a key player in the PC components industry, extending its expertise to include cases and power supply units (PSUs). The company's current catalog is a testament to its commitment to diversity, featuring over 75 PC cases, 90 coolers, and 120 PSUs, all designed to cater to the evolving demands of tech enthusiasts and professionals alike.

This review focuses on the Cooler Master MWE Gold V2 750W PSU, a key offering in Cooler Master's power supply lineup that embodies the brand's vision of combining quality and value. The MWE Gold V2 series is engineered to offer solid performance and reliability at a price point that appeals to system builders and gamers looking for an entry-level to mid-range solution. As a result, the MWE Gold V2 750W has been a consistently popular offering within Cooler Master's catalog, often cycling in and out of stock depending on what sales are going on. This makes the PSU a bit harder to track down in North America than it does Europe, and quick to vanish when it does show up.